respect zoom when drawing drawings

Dependencies

• [2] V5TP27FP ctrl-+ and ctrl-- to adjust font size
• [*] OTIBCAUJ love2d scaffold
• [*] UTF73CBL reorg

Change contents

• edit in main.lua at line 601
  [2.166]

  [2.166]
  + drawingw = drawingw/zoom
• edit in main.lua at line 603
  [2.186]

  [2.186]
  + drawingw = drawingw*zoom
• edit in main.lua at line 605
  [2.215]

  [2.215]
  + drawingw = drawingw/zoom
• edit in main.lua at line 607
  [2.235]

  [5.656]
  + drawingw = drawingw*zoom